Motorcycle grab bar



FIG. 1 is a side elevational view of a motorcycle grab bar showing our new design;

FIG. 2 is a perspective view thereof; and,

FIG. 3 is a top plan view thereof.

The broken line showings of the connector holes and the remainder of the motorcycle are for illustrative purposes only and form no part of the claimed invention. 

The ornamental design for a motorcycle grab bar, as shown and described. 